Beachcombers on US West Coast prepare for more debris from last year's Japan tsunami

Hey there, time traveller!This article was published 25/12/2012 (1444 days ago), so information in it may no longer be current.

LOS ANGELES, Calif. - Volunteers who patrol California beaches for plastic, cigarette butts and other litter will be on the lookout this winter for debris from last year's monstrous tsunami off Japan's coast.

The March 2011 disaster washed about 5 million tons of debris into the sea. Most sank, leaving an estimated 1 1/2 million tons afloat. No one knows how much debris — strewn across an area three times the size of the United States — is still adrift.

U.S. COAST GUARD HANDOUT / THE ASSOCIATED PRESS

This image provided by the U.S. Coast Guard shows a large ocean-drifting dock that washed ashore in an extremely rugged and remote section of coast in the Olympic National Park on Dec. 18. It was found between LaPush and the mouth of the Hoh River. The Coast Guard mounted a series of flights to locate the dock after it was spotted adrift in the ocean last Friday by fishermen aboard Fishing Vessel Lady Nancy. The National Oceanic and Atmospheric Administration worked to determine the dock’s trajectory based on the reported location at the time of the sighting. It has not been confirmed whether the dock is a piece of debris from the devastating March 2011 tsunami in Japan.

Last week, the U.S. Coast Guard spotted a massive dock that possibly came from Japan on a wilderness beach in Washington state.

The West Coast is bracing for more sightings in the coming months as seasonal winds and coastal currents tend to drive marine wreckage ashore.

The National Oceanic and Atmospheric Administration recently received a $5 million donation from Japan to track and remove tsunami debris.

Debris from Asia routinely floats to the U.S. It's extremely difficult to link something back to the Japanese tsunami without a serial number, phone number or other marker.

Of the more than 1,400 tsunami debris sightings reported to NOAA, the agency only traced 17 pieces back to the event, including small fishing boats, soccer balls, a dock and a shipping container housing a Harley-Davidson motorcycle with Japanese license plates.

Charlie Plybon, Oregon's regional manager at the Surfrider Foundation, said the tsunami has raised beachgoers' awareness about marine debris plaguing the world's coastlines.

"There's a bit of tsunami debris fever. It's like an Easter egg hunt," said Plybon, who has been cleaning up the Oregon coast for over a decade. "People used to walk past debris. Now they want to be engaged."

Tsunami waves swamped a Japanese nuclear power plant and swept debris into the ocean, but health experts have said debris arriving on the West Coast is unlikely to be radioactive after having crossed thousands of miles of ocean. The debris field, which once could be spotted from satellite and aerial photos, has dispersed.

More than 18,000 residents were killed or went missing.

Volunteer Julie Walters has combed Mussel Rock Beach south of San Francisco for wreckage, but all she has found so far are wave-battered boat parts and lumber of unknown origin.

If she did find an object with a direct link, "I would find it quite intriguing that it made this incredible journey across the Pacific," said Walters, a volunteer with the Pacifica Beach Coalition. "It would also sadden me to think of the human tragedy."

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AP writers Becky Bohrer in Honolulu and Tim Fought in Portland, Oregon, contributed to this report.

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